Breastfeeding question

Ontaya
Ok so I'm still breastfeeding my 5 month old to give him less of a chance at getting diabetes since I have it he's at greater risk, so I'm wondering if this is normal or not but as my milk supply started to regulate it seemed like it started to dry up, but In just the past week it jumped up again like he was a new born, is it normal or what is the cause of this? Please no rude comments, and thank you in advance